Large-scale wind electricity and high energy-carrying load coordination control method

A coordinated control and high-energy-carrying technology, which is applied in wind power generation, reduction/prevention of power oscillation, single-network parallel feeding arrangement, etc., can solve problems such as poor stability, small application range, and low output, and achieve good stability, Large application range and high output

Active Publication Date: 2014-02-05
STATE GRID CORP OF CHINA +3
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[0006] In the process of realizing the present invention, the inventors found that at least ther

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  • Large-scale wind electricity and high energy-carrying load coordination control method
  • Large-scale wind electricity and high energy-carrying load coordination control method
  • Large-scale wind electricity and high energy-carrying load coordination control method

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Embodiment Construction

[0047] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0048] According to an embodiment of the present invention, such as Figure 1-Figure 3 As shown, a coordinated control method for large-scale wind power and high-energy loads is provided.

[0049] The method for coordinated control of large-scale wind power and high-energy loads in this embodiment includes:

[0050] Step 1: According to the short-term forecast curve and load forecast curve of the wind farm output, the wind farm output is defined as a negative load, which is superimposed on the original load to form an equivalent load curve;

[0051] In step 1, ultra-short-term load forecasting refers to: 5min to 60min ultra-short-term load forecasting, the forecast...

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Abstract

The invention discloses a large-scale wind electricity and high energy-carrying load coordination control method. The large-scale wind electricity and high energy-carrying load coordination control method comprises the steps of defining the output of a wind power plant as a negative load according to the output short-term prediction curve and a load prediction curve of the wind power plant, overlaying an original load with the negative load and forming an equivalent load curve; according to the equivalent load curve, on the basis of considering the operation conditions of a wind power generating unit and a thermal power generating unit and the constraint conditions of the units, making generation plans of the wind power generating unit and the thermal power generating unit; according to the generation plan and the rated capacity of the thermal power generating unit, determining the spare capacity of the thermal power generating unit, adopting part of the spare capacity as the wind power pitch peak, and using another part of the spare capacity as the margin of the spare capacity; and when the wind power fluctuates, according to the spare capacity, used as the wind power pitch peak, of the thermal power generating unit, inhibiting the fluctuation of the wind power by adjusting the output power of the thermal power generating unit. The large-scale wind electricity and high energy-carrying load coordination control method has the advantages of being capable of achieving high output, large in application range and good in stability.

Description

technical field [0001] The invention relates to the technical field of wind power grid connection, in particular to a coordinated control method for large-scale wind power and high-energy loads. Background technique [0002] Due to the randomness and intermittent characteristics of wind energy, the utilization of wind energy has certain uncertainties. At the same time, with the continuous progress of modern wind power generation technology, the single-unit capacity of wind turbines continues to increase. More and more wind farms are connected to the transmission network on a large scale, which makes the impact of wind power on the grid continue to increase. [0003] Compared with conventional power generation methods such as hydropower and thermal power, the most fundamental difference of wind power lies in the randomness, intermittentness and uncontrollability of its active output. This feature determines that when wind power is connected to the grid, the conventional pow...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02J3/46
CPCY02E10/763Y02E10/76
Inventor 刘福潮文晶梁雅芳徐鹏陈文清但扬清吕泉成吴晓丹张宇泽刘文颖
Owner STATE GRID CORP OF CHINA
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